Try Sears-- (1-800-366-7278) or Outboard Motor-serice manual.11th edition by intertec which you should be able to get at any regional library. Your motor is a 1979 motor made by Eska for Sears. If you need technical advice I found out that on this forum there are lots of knowledgeable people on gamefisher motors (tailgunner)Good luck with your repairs. BB